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Correlation-Dependent Coherent to Incoherent Transitions in Resonant Energy Transfer Dynamics

Nazir, A; (2009) Correlation-Dependent Coherent to Incoherent Transitions in Resonant Energy Transfer Dynamics. PHYS REV LETT , 103 (14) , Article 146404. 10.1103/PhysRevLett.103.146404. Green open access

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Abstract

I investigate energy transfer in a donor-acceptor pair beyond weak system-bath coupling. I identify a transition from coherent to incoherent dynamics with increasing temperature, due to multiphonon effects not captured by a standard weak-coupling treatment. The crossover temperature has a marked dependence on the degree of spatial correlation between fluctuations experienced at the two system sites. For strong correlations, this leads to the possibility of coherence surviving into a high-temperature regime.

Type: Article
Title: Correlation-Dependent Coherent to Incoherent Transitions in Resonant Energy Transfer Dynamics
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.103.146404
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.103.146404
Language: English
Additional information: © 2009 The American Physical Society
Keywords: QUANTUM COHERENCE, PHOTOSYNTHESIS, MIGRATION, COMPLEXES, SYSTEM
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/128262
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